Add a key store to avoid storing secrets in the store

src/ctap/status_code.rs

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+use crate::api::key_store;
 use crate::api::user_presence::UserPresenceError;
 
 // CTAP specification (version 20190130) section 6.3
@@ -93,3 +94,9 @@ impl From<UserPresenceError> for Ctap2StatusCode {
         }
     }
 }
+
+impl From<key_store::Error> for Ctap2StatusCode {
+    fn from(_: key_store::Error) -> Self {
+        Self::CTAP2_ERR_VENDOR_INTERNAL_ERROR
+    }
+}